Tube connector



FIG. 1 is a top, front and one side perspective view of a tube connector showing our new design;

FIG. 2 is a bottom, rear and opposite side perspective view thereof;

FIG. 3 is a side elevational view front the side which appears at the lower left of FIG. 2;

FIG. 4 is a side elevational view from the side that appears at the lower left of FIG. 1; and,

FIG. 5 is a top plan view thereof in the position of FIG. 1. 

The ornamental design for tube connector, as shown and described. 